Delay arming antidisturbance fuse



`Da-.14,1945 TAYLOR 2,455,958

DELAY ARMING ANTIDISTURBANGE FUSE Filed Feb. 27, 1947 3 Sheets-Sheet 2 Dec; 14, 1948. J. TAYLOR v 2,455,953

DEMYARMING ANTIDISTURBANGE FUSE Filed Feb. 27, 1947 3 Sheets-Sheet 5 -JDHN TAYLDR,

Patented Dec. 14? 1948 DELA-r Ale-mno .52,455,9`s ANTIDISTURBANCEFUSE 1;] ohn Taylor, Bronxville, N. Y. Appication lFemme-ry 27, 19217; `serial No. "731,200

2(Granted under the act fof uMarch 3, 1883, as

.-l The'linvention described inthe following speci- 'lcation fandiclaimlmay beimanufactured and iused by 'or 'for the Government `.for :governmental .pur- 4poses Without the Apayment to me of any royalty thereon. My'iinventi'on Lrelfates to ran .fanti-disturbance or fanti-lift Afuse for military explosive itemssuch as land mines, shells, lfbombs, rockets and the 'lfike 'and relates. more 4particularly to .means "whereby the mechanism .is .initially actuated. 1n the instance nina bomb or :other `iprojeotile the "initial :actuation Yis preferably achieved by ithe shock off-impact, While :in the 'instancefof sa fnon- =pr`oject e'd item, Ssuohasaland mine, the actuation im'ay be initiated byafbl'ow, .byclo'olwvorkV or Yin. Vany other suitable lmanner..

Devices i. of the foliaractor Iof my :invention were fwi'd'ely -us'ed in the vrecent `War to prevent :bomb fd-isposal 'nniits from :lifting fand disposing of run- Iexlploded l'and lmines, projectiles, :bombs .Sand the like and generally .comprise )means for. .arming *the device lso that theV slightest :disturbance of the idevice `thereafter will .d'etonate lth'e charge.

With .the foregoing linfv'iew,fan 'obect of my yinyention is "to 'providewan'improyed anti-disturb- "ancepffuse Alf-urther objeot is to providezan improved :arm-- ingrmeans'orra fuse.

\ -A` further-object iis lto provide an 'improVeziarm- "ing @means fior a lfuse 'wherein fthe =arming ris .Lac- Wc'cmnplis'h'ed` :by the `bleeding of *fluid fromm collapsible container.

A `furtherolzrject is to `provide .an 4irnprlived antisdisturbance mechanism fior a ruse.l '1. JA fxurtner object isvto provide anlimprovedantidis'turbance mechanism 'for a ffuse whicnwhen `farm-ed,I comprises fa ball for roller lprecariously interposed between `.a static part 4and a spring `loaded i movable "rring` mechanism whereby detofnation- 'or the Sf'use fis prevented as flong as -saiid ballon-roller remains-inplace. -Said ball or 'roller bein'g adapted to jbe :displaced vfattheslightest .disturbance `Ito f-detona'te the ruse.

A further object 'iis fito Iprovide `in 1va reuse la novel combination of anti-'disturbance fand `arrriing means. 1 j

A further object is to provide-a novelimjethod of armingzaruse. i

l.(Dthcer-'objects andadvantages'ireside ain the fpar- .ticu'la'rstructure fof l my invention, :combination .and arrangemenftrof the severalparts and .inthe A.particular method or mode iof operation, 'all `lof which will be `readily appa-rent to @those skilled in the art upon reference to thelrdrawingsfa-nd to the hereinafter set forth specification wherein tthe` invention is shown, .described and claimed.

"oncthe outer `peripl'iery ofthe connector l5 con- `edge 4'of the side wall I2. of the passage 3U is normally closed by a rupturamendedlAprilll, 1928.; '370 0. G. 757) 'the Jdrawing:

.Figure 1 .is` a longitudinal section through 1a .fusefaccording to the invention, most of the parts :being shown in the ysafe position, vbut the dei;- onator `being fsh'own in the armed position;

Figure 2-is a transverse `section taken on the lplane `of thelne '2e-2, Figure 1;

Figure 3 is a fragmentary, longitudinal :section showing :the detonator in the unarmed position;

Figure 4 is a fragmentary, transverse .section taken on the plane .ofthe line 4 4 of Figure 1;

.Figure 5 is a fragmentary, transverse section 'taken on the plane of the line '5-5, Figure 1;

`Figure' Bs an enlarged, longitudinal, fragmentary section of a detail, showing the initiation of .the arming cycle;

Fligure 7Lis a perspective yiew of adetail; Figure 8 is fa View like Figure .1, the V.partsbelng `shoWn in `the armed position; and

-rsive 4charge. 'The inner periphery of the wall -l2 `:is de'tachably connected as at -I4 to a cylindrical :connecting por-tion l5 o'f a cup-shaped base mem- `rber 'F6 ofthe fuse. "The base of the member :I6 is detachable connected as at l'l to the usual kbooster casing lIB. The open ends of the *cupshaped head member Ill "and the base 'member '|'6 farein opposed, facing `relation and are lspacedly connected bythe cylindrical connector l5.

rThe head member is formed with a bleed -p'assage til-therein one end of which opens into the interior 'of V the cup-shaped portion andthe 4other Iend of which opens throughthe free Iend Such last named end able sealing disc- 31. A branch passage 32 vof *bleed Apassage "30 (opens 'through the periphery of thebasefmember -l-'0 and comprisesa filling open-- ing for fluid. Such branch passage lis normally sealed-by a readily removable closure 33.

,A :cylindrical :hammer 20 is slidably mounted centvi'cally thereof. 'One Vend edge of the hammer 20"is provided with a, pointed pin 2l which -upon `arranged to form a cage.

'the collar 12 and the closure disc 6|.

mer and puncture the rupturable sealing disc 3| of the bleed passage 30 in the head member I8.

The pin 2| is formed with a passageway 22 therethrough (Figure 6) or with other suitable means to prevent the pin 2| from sealing the bleed passage 3U in the event it sticks therein after puncturing the sealing disc 3|. The pin 2| is maintained in centered relation to disc 3| by the shaft 26 which extends through a longildinal shaftway 23 in one side wall of hammer The head member I and base member I6 are formed with shaftways 24, 25 respectively therethrough which are aligned with each other and with the shaftway 23 in hammer 28. The shaft 26 is freely received in the ways 23, 24, 25 for free rotation therein. The outer end (not shown) of shaft 26 is connected to any suitable means for rotating the shaft to effect a partial arming of the fuse. A latch 21 is fixed on shaft 26 intermediate its ends and, as will -be described later, normally locks certain of the parts of the fuse in the unarmed position. The inner end of the shaft 26 has a spring arm 28 fixed thereon for rotary movement therewith. A detent 29 is formed on the inner surface of arm 28 adjacent the free end thereof. A primer 40 is carried by the free end of the arm 28. The detent 29 normally bears against the floor I9 of the base mem- Iber I 6, whereby to maintain the primer 40 firmly against the cover 4I of the booster I8 (Figure 3). A collapsible metal bellows 50 is xed to the inside of base I I of the cup-shaped head member I0 and has an opening 5| therein surrounding the inner end of the bleed passage 3U. The opposite end of the bellows 50 has disc 52 iixed thereon Vwhich in turn has a plurality of outwardly and longitudinally extending pins 53 fixed thereto and One edge of the disc 52 may be recessed as at 54 (Figures 1 and 5) to receive the latch 21 to prevent collapse of the bellows prior to the arming cycle. One end of a coil spring 55 concentrically disposed within the connector I5, bears against the free face of disc .52 and loads bellows 50 for collapsing. The other end of the coil spring 55 is seated on the upper edge of the base member I6.

A firing pin assembly which comprises a cylingdrical member 60 which is slidably mounted in the `cup-shaped base member I6.

the cylinder 6I] is provided with a plano-concave closure disc 6| which is detachably secured thereto with the concave surface disposed inwardly. Holes 62 are formed through closure 6| and slid- .ably receive the cage pins 53 which extend through said closure into the interior of the cylinder 6D when the fuse is in the unarmed position. A firing pin 63 is extended outwardly from an :eccentric location on the outside of the closed bottom end 64 of the cylinder 60. An axially -disposed hole 65 is formed through the bottom -64 and slidably receives an axially extending pin the butt end of which is detachably secured to -the oor I9 of the base member.

'A firing pin spring 13 is compressed between the collar 12 and the floor 64 of the cylinder 6B to load the latter for movement toward the floor I9 of the base member I6. A ball or roller 66 is located in the cylinder 60 in the space between fuse is in the unarmed position (Figure 1), the

The upper end of f When the v ball 66 is held in the cage formed by the cage pins 53 by pressure of the point 1| of the pin 10. By virtue of the concave ball seating surface of the disc 6| plus the axial location of the pin 18, this position is precariously and temporarily maintained when the fuse is armed (Figure 8). However, upon the slightest disturbance, the ball 66 is displaced and the firing pin spring drives the cylinder 60 in a firing direction (Figure 9).

For firing, the iioor I9 of the base member I6 has an eccentric hole 15 therethrough to permit passage of the firing pin 63. The primer 40 is ultimately positioned in alignment with hole 15 and a flame hole 16 is formed in the cover 4| of the booster I8 in alignment with said hole 15. A recess 43 in the outer surface of the iioor |9 of the base I6 receives the detent 29 of the primer arm 28 to lock the latter when the same has been swung a distance sufficient to position the primer 40 in alignment with the holes 15 and 16. Any suitable means (not shown) may be provided to stop the further rotation of the shaft 26 and/or the swinging thereby of the primer arm 28 after the detent 29 seats in recess 43.

The operation of the fuse will be described as applied to an aerial bomb. Before the bomb is dropped the parts are generally in the positions shown in Figure 1 except that the primer 40 is located as shown in Figures 2 and 3. As the bomb falls the arming vanes or other means (not shown) rotate the shaft 26 whereby the latch 21 is withdrawn from the recess 54 of the disc 52 through a slot 11 in the connector I5 to the broken line position (Figure 5) whereby to clear the shoulder 19 formed in the recess 18 of the hammer 20 and free the latter for movement. At the same time, the primer arm 28 is swung from the Figure 2 position to the armed position of Figure 1. No other arming movement takes place while the bomb is in flight.

Upon impact, the freed hammer 20 is thrown forward by its inertia and the pointed pin 2| thereof punctures the disc 3| of the bleed passage 30. Fluid from the bellows 50 is now forced out through passage 30 and the bellows is slowly collapsed by the action of the spring 55. As the bellows collapse, the cage pins 53 are gradually withdrawn through the holes 62 in closure 6| until the armed position of Figure 8 is attained. Firing of the fuse may now occur at once if any inaccuracy of manufacture has resulted in the location of the pin point 1| slightly oif center relative to the ball 66. Otherwise, the fuse may remain in the armed position indefinitely until some disturbance displaces the ball 66.

Thus, even if detonation occurs instantaneously with the completion of the arming cycle, the fuse will not function until after maximum penetration has been achieved. If functioning is delayed after the arming cycle the enemy is denied the use of the danger area around the bomb as the position and arrangement of the parts is such that the bomb can neither be removed nor disarmed. Obviously the morale shattering aspects of the latter situation are of the greatest importance in modern warfare.

While I have shown and described what is now thought to be the preferred form of the invention, it is obvious that the same is susceptible of other forms and expressions. Consequently, it is understood that the invention is not limited to the precise structure shown and described except as hereinafter claimed.

Iclaim:

In a fuse, the combination of arming means.

6 REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,304,544 Conrad May 27, 1919 2,362,123 Doe Nov. 7, 1944 2,377,174 Parker May 29, 1945 FOREIGN PATENTS Number Country Date 518,934 Great Britain Mar. 12, 1940 

